SMT Rio Grande II LLC
Battery storage power plant · Starr County, Texas
Nameplate capacity
10 MW
Rank in Texas
#744
of 1,071 plants
In service since
2023
December 2023
Details
- Primary fuel
- Battery storage
- Technology
- Batteries
- Operator
- SMT Rio Grande II LLC
- County
- Starr County
- Generating units
- 1
- Share of state capacity
- 0.00%
- Rank among battery storage plants in Texas
- #128 of 211
- EIA plant code
- 66935
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SMTR2 | Batteries | 10 MW | 10 MW | 2023 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Texas
| SMT Mission LLC | Battery storage | 10 MW |
| SMT Rio Grande I LLC | Battery storage | 10 MW |
| SMT Santa Rosa LLC | Battery storage | 10 MW |
| Snyder BESS | Battery storage | 10 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 10 MW solar plant and a 10 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Texas power plants · What Texas actually generates